What is Btrfs?

• Relatively new filesystem for Linux

• Fully featured

• Resiliency
• Checksumming of data and meta-data
• Redundancy
• Multi-device support (mirrored data and meta-data, striped data)
• Compression
• Subvolumes and snapshots
• De-duplication through shared data extents
• Block, files or subvolume (snapshot) granularity